CN219959202U - Positive and negative electrode same side battery cover plate assembly and cylindrical battery - Google Patents
Positive and negative electrode same side battery cover plate assembly and cylindrical battery Download PDFInfo
- Publication number
- CN219959202U CN219959202U CN202320291021.8U CN202320291021U CN219959202U CN 219959202 U CN219959202 U CN 219959202U CN 202320291021 U CN202320291021 U CN 202320291021U CN 219959202 U CN219959202 U CN 219959202U
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- China
- Prior art keywords
- cover plate
- plate body
- positive
- aluminum block
- negative electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 56
- 238000001746 injection moulding Methods 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 13
- 239000002893 slag Substances 0.000 abstract description 6
- 239000004411 aluminium Substances 0.000 abstract description 4
- 238000004804 winding Methods 0.000 description 14
- 239000000243 solution Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model provides a positive and negative electrode same-side battery cover plate assembly and a cylindrical battery, wherein the positive and negative electrode same-side battery cover plate assembly comprises a cover plate body, and the cover plate body is provided with a first through hole; the aluminum block is arranged in the first through hole and is in insulating connection with the cover plate body; the pole is provided with two, and the apron body and aluminium piece are run through respectively to the one end of two poles, and the other end of two poles has welded the collection flow dish respectively. The structure is provided with two polar posts, one polar post penetrates through the cover plate body, and the other polar post penetrates through the aluminum block to extend to the outside of the battery, so that the welding of the polar post and the cover plate body and the welding of the polar post and the aluminum block are conveniently carried out outside, the residual welding slag in the battery can be avoided, and the safety performance of the battery is improved.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery cover plate assembly with positive and negative electrodes on the same side and a cylindrical battery.
Background
The cylindrical battery is a common battery monomer structure, and under normal conditions, the positive electrode and the negative electrode of the cylindrical battery are respectively positioned on two opposite end surfaces of the battery body, so that the technology of leading out the positive electrode and the negative electrode in the same direction of the cylindrical battery is continuously developed in order to meet specific use requirements.
The utility model patent application with the publication number of CN114899500A discloses a preparation method of a cylindrical lithium ion battery with positive and negative electrode tabs on the same side, wherein the edges of blank foils of positive and negative electrode tabs are cut into stepped positive and negative electrode tabs with the same width, different heights and different distances, the stepped positive and negative electrode tabs are wound to form winding cores on the same side of the positive and negative electrode tabs, and winding cores comprising positive and negative electrode tabs, positive and negative electrode bus plates, insulating plates, shells, positive electrode posts and explosion-proof plates are wound and overlapped to form the winding cores on the same side of the positive and negative electrode tabs.
In the above technical scheme, the positive electrode post penetrates through the cover plate, the negative electrode is not provided with the post, the negative electrode collecting piece is connected with the negative electrode lug and then is required to be fixed with the inner wall of the shell, welding slag is easy to remain in the battery in the process of fixed welding, the cycle performance of the battery can be influenced, and potential safety hazards exist simultaneously.
Disclosure of Invention
In view of the above, the utility model provides a positive and negative electrode same-side battery cover plate assembly and a cylindrical battery, which can avoid residual welding slag in the assembly of the assembly in the battery.
The technical scheme of the utility model is realized as follows:
in one aspect, the utility model provides a positive and negative electrode same-side battery cover plate assembly, which comprises a cover plate body, wherein the cover plate body is provided with a first through hole;
also comprises an aluminum block, a pole column and a confluence disc, wherein,
the aluminum block is arranged in the first through hole and is in insulating connection with the cover plate body;
the two poles are arranged, one ends of the two poles respectively penetrate through the cover plate body and the aluminum block, and the other ends of the two poles are respectively welded with a converging disc;
on the basis of the technical proposal, the utility model preferably further comprises an insulating frame, wherein the insulating frame comprises a ring frame and a baffle plate,
the ring frame is arranged on one side of the cover plate body and is in a circular ring structure;
the baffle is arranged in the ring frame to separate the middle space of the ring frame to form two semicircular positioning holes, and the two positioning holes respectively accommodate a confluence disc.
On the basis of the technical scheme, preferably, the insulating frame is an injection molding piece, and the insulating frame and the confluence disc are connected into a whole in an injection molding mode.
On the basis of the technical proposal, preferably, the insulating connecting piece of the aluminum block and the cover plate body is an insulating ring, the insulating ring comprises a first part, a second part and a third part, wherein,
the first part is attached to one end face of the cover plate body and the aluminum block, which are located in the same direction;
the second part is attached to the end surfaces of the cover plate body and the aluminum block, which are far away from the first part;
and the third part is in an annular structure and is arranged between the cover plate body and the aluminum block, and the third part is connected with the first part and the second part.
In the above aspect, preferably, the third portion has a cross-shaped longitudinal section.
On the basis of the technical scheme, preferably, the insulating ring is an injection molding piece, and the insulating ring, the cover plate body and the aluminum block are connected into a whole in an injection molding mode.
On the basis of the above technical scheme, preferably, the two end faces of the cover plate body are provided with limiting grooves, and the first part and the second part are respectively attached in one limiting groove.
On the basis of the above technical solution, preferably, the first portion and the second portion are in annular plate-shaped structures, and the diameters of the first portion and the second portion are larger than the diameter of the third portion.
On the basis of the above technical solution, preferably, the inner diameter of the second portion is larger than the inner diameter of the first portion, the first portion is located between the cover plate body and the confluence disc, and the inner diameters of the first portion and the third portion are the same.
On the other hand, the utility model provides a cylindrical battery, which comprises the positive and negative electrode same-side battery cover plate assembly and the cylindrical battery.
Compared with the prior art, the anode-cathode same-side battery cover plate and the cylindrical battery have the following beneficial effects:
(1) Through the arrangement of the two polar posts, one polar post penetrates through the cover plate body, and the other polar post penetrates through the aluminum block to extend to the outside of the battery, so that welding of the polar post and the cover plate body and welding of the polar post and the aluminum block are convenient to carry out outside, residual welding slag in the battery can be avoided, and the safety performance of the battery is improved; the aluminum block can be matched with the insulating ring to ensure the stable position of the pole, and meanwhile, the overcurrent capacity of the pole is improved;
(2) Through setting up the insulating ring into the connection that first portion, second portion and third portion are used for the aluminum block of apron body, and the cross-section of third portion sets up to the cross, and it not only can improve the joint strength of apron body and aluminum block, and can improve sealed effect.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a positive and negative electrode ipsilateral cell cover plate of the present utility model;
FIG. 2 is an exploded view of the anode-cathode same-side battery cover plate of the present utility model;
FIG. 3 is a block diagram of an insulating frame, a buss plate and a pole column of a battery cover plate on the same side of an anode and a cathode of the utility model;
FIG. 4 is a perspective view of an insulating ring of a battery cover plate on the same side as the anode and the cathode of the utility model;
FIG. 5 is a cross-sectional view of an insulating ring of a positive and negative electrode same-side battery cover plate of the present utility model;
fig. 6 is a perspective view of a cylindrical battery of the present utility model;
fig. 7 is an exploded view of the cylindrical battery of the present utility model;
fig. 8 is a cross-sectional view of a cylindrical battery of the present utility model;
fig. 9 is a view of the structure of point a in fig. 8.
In the figure: the cover plate body 1, the first through hole 101, the aluminum block 2, the insulating frame 3, the ring frame 31, the partition plate 32, the positioning hole 301, the bus plate 4, the pole 5, the insulating ring 6, the first part 61, the second part 62, the third part 63, the limit groove 00, the shell 7, the winding core 8 and the pole lug 9.
Detailed Description
The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
As shown in fig. 1 to 9, the battery pressing plate on the same side of the anode and the cathode comprises a cover plate body 1, an aluminum block 2, an insulating frame 3, a bus plate 4, a pole 5 and an insulating ring 6.
The cover plate body 1 is made of materials such as steel and aluminum, and is used for sealing the end part of the battery shell, and when the battery shell is sealed, the cover plate body 1 and the battery shell are connected in a welding mode.
The cover plate body 1 is provided with a first through hole 101; the aluminum block 2 is arranged in the first through hole 101, and the aluminum block 2 is connected with the cover plate body 1 in an insulating manner; the two poles 5 are arranged, one ends of the two poles 5 respectively penetrate through the cover plate body 1 and the aluminum block 2, and the other ends of the two poles 5 are respectively welded with a confluence disc 4; in the above structure, one end of one pole 5 is welded with the through cover plate body 1 continuously by laser, and the other end of the pole 5 is welded with the confluence disc 4; one end of the other pole 5 penetrates through the aluminum block 2 and is welded continuously by laser, and the other end of the pole 5 is also welded with a busbar 4. The connection mode is to weld from the outside of the battery during welding, so that the welding slag is prevented from remaining in the battery, the cycle performance of the battery is prevented from being influenced, and the safety performance of the battery is obviously improved; and the setting of aluminium brick 2 can cooperate utmost point post 5 to promote the overcurrent capacity.
The pole 5 needs to be electrically connected with the winding core of the battery, and the end parts of the two pole 5 are provided with a confluence disc 4, and an insulating frame 3 is arranged for positioning components during connection conveniently. The insulating frame 3 is arranged on one side of the cover plate body 1, and two positioning holes 301 are formed in the insulating frame 3; the two confluence plates 4 are arranged, and the two confluence plates 4 are respectively positioned in one positioning hole 301; the pole 5 is provided with one on each of the two bus plates 4.
According to the structure, when the assembly is carried out, the pole 5 is welded and arranged on the bus plate 4, then the bus plate 4 is placed into the insulating frame 3, the bus plate 4 and the pole 5 are connected, the positions of the three are relatively fixed, the three are placed on the winding core 8 of the battery, the bus plate 4 and the pole lug 9 of the winding core 8 are welded, only the battery winding core 8 and the bus plate 4 are needed to be positioned, and the assembly positioning device has the advantage of convenience in positioning the assembly and can improve the assembly efficiency.
The insulating frame 3 comprises a ring frame 31 and a partition plate 32, wherein the ring frame 31 is arranged on one side of the cover plate body 1, and the ring frame 31 is in a circular ring structure; the partition plate 32 is disposed in the ring frame 31 to partition the middle space of the ring frame 31 to form a semicircular positioning hole 301. According to the above structure, the confluence plate 4 is provided in a semicircular shape according to the shape of the positioning hole 301, and the confluence plate 4 of this structure can fully utilize the space of the insulating frame 3 and fully attach to the tab 9 of the winding core 8, and the space utilization is high.
Further, in order to improve the tightness of the assembly connection, the insulating frame 3 is an injection molding piece, and the insulating frame 3 and the bus plate 4 are connected into a whole in an injection molding mode. During such production, the pole 5 is welded to the busbar 4, the two busbar 4 are positioned through the injection mold, and then the insulating frame 3 is formed through injection molding to be arranged into an integral structure.
An insulating ring 6 is arranged between the aluminum block 2 and the cover plate body 1 and used for insulating between the cover plate body 1 and the aluminum block 2 bracket, so that short circuit of the battery is avoided. In this way, one of the bus plates 4 and one of the poles 5 serve as the positive electrode, the other bus plate 4 and one of the poles 5 serve as the negative electrode, and one of the poles 5 penetrates the cover plate body 1, and the other pole 5 and the penetrating aluminum block 2. Because of the insulation between the aluminum block 2 and the cap plate body 1, the aluminum block 2 and the cap plate body 1 can be used as the positive and negative electrodes of the battery, respectively.
After the assembly of the cover plate body 1, the aluminum block 2 and the pole 5 is completed, the pole 5 extends out of the cylindrical battery, and at the moment, gaps between the pole 5 and the cover plate body 1 and gaps between the pole 5 and the aluminum block 2 are continuously welded through laser, so that residual welding slag in the battery can be avoided.
Specifically, the insulating ring 6 includes a first portion 61, a second portion 62, and a third portion 63, where the first portion 61 is attached to one end face of the cover plate body 1 and the aluminum block 2 that are located in the same orientation; a second portion 62 attached to the end surfaces of the cover body 1 and the aluminum block 2 away from the first portion 61; the third portion 63 is in a ring-shaped structure, is arranged between the cover plate body 1 and the aluminum block 2, and the third portion 63 is connected with the first portion 61 and the second portion 62. As described above, the insulating ring 6 will axially limit the cover plate body 1 and the aluminum block 2 to prevent the component from moving, and the structure will be more stable after the aluminum block 2 and the pole 5 are welded.
Further, the third portion 63 has a cross-shaped longitudinal cross-section. The longitudinal section refers to an axial section view of the cylindrical battery after the third portion 63 is assembled into the cylindrical battery, and specifically, referring to fig. 8, the third portion 63 with the structure can further limit the axial position of the cover plate body 1 and the aluminum block 2 while realizing connection between the first portion 61 and the second portion 62, thereby enhancing the connection firmness of the cover plate body 1 and the aluminum block 2.
When setting up insulating ring 6, insulating ring 6 adopts the injection molding, through mould location apron body 1 and aluminium piece 2, forms insulating ring 6 and realizes integrated into one piece again. In this way, the insulating ring 6, the cover plate body 1 and the aluminum block 2 have better bonding strength.
In order to avoid the problems of flanging, breakage and the like of the insulating ring 6, limiting grooves 00 are formed in two end faces of the cover plate body 1, and the first portion 61 and the second portion 62 are respectively attached in one limiting groove 00. In this way, the insulating ring 6 can be protected, so as to avoid the problem of flanging damage on the edges of the first portion 61 and the second portion 62 of the insulating ring.
Specifically, the first portion 61 and the second portion 62 have annular plate structures, and the diameters of the first portion 61 and the second portion 62 are larger than the diameter of the third portion 63. So when guaranteeing to cover plate body 1 and aluminium piece 2 axial spacing, can avoid cover plate body 1 to hold the groove of third portion 63 too dark and lead to influencing cover plate body 1's structural strength.
Further, the inner diameter of the second portion 62 is larger than the inner diameter of the first portion 61, the first portion 61 is located between the cover plate body 1 and the confluence plate 4, and the inner diameters of the first portion 61 and the third portion 63 are the same. In the above structure, the pole 5 needs to pass through the insulating ring 6, the inner diameter of the first portion 61 can be set to be the same as the diameter of the pole 5, and the inner diameter of the second portion 62 is set to be larger than the inner diameter of the first portion 61, so that a space is reserved, and the aluminum block 2 and the pole 5 can be welded conveniently.
As shown in fig. 6 to 8, the cylindrical battery of the present utility model further comprises a housing 7, a winding core 8 and a tab 9, wherein the winding core 8 is placed in the housing 7, one end of the winding core is provided with the tab 9, and when the battery cover is assembled, the battery cover is used for sealing a port of the housing 7, and the tab 9 and the bus plate 4 of the battery cover are welded and fixed.
The specific implementation steps are as follows:
when assembling, the cover plate body 1, the insulating ring 6 and the aluminum block 2 are connected in an injection molding mode and are arranged into an integral structure, the pole 5 is welded on the busbar disc 4, the busbar disc 4 and the insulating frame 3 are connected in an injection molding mode and are arranged into an integral structure, the busbar disc 4 is welded with the pole lugs on the winding core 8, after the assembly is completed, the winding core 8, the insulating frame 3, the busbar disc 4 and the pole 5 are assembled into the shell 7, the cover plate body 1 is installed, when the assembly is carried out, one pole 5 penetrates through the cover plate body 1, the other pole 5 penetrates through the aluminum block 2, finally the cover plate body 1 and the shell 7 are welded continuously through laser, one pole 5 and the cover plate body 1 are welded continuously through laser, and the other pole 5 and the aluminum block 2 are welded continuously through laser.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. The battery cover plate assembly with the same positive and negative electrodes comprises a cover plate body (1), wherein the cover plate body (1) is provided with a first through hole (101);
the method is characterized in that: also comprises an aluminum block (2), a pole column (5) and a confluence disc (4), wherein,
the aluminum block (2) is arranged in the first through hole (101), and the aluminum block (2) is connected with the cover plate body (1) in an insulating manner;
the utility model discloses a solar cell, including apron body (1) and aluminum block (2), utmost point post (5), be provided with two, the one end of two utmost point posts (5) is run through respectively apron body (1) and aluminum block (2), the other end of two utmost point posts (5) has welded respectively and has converged dish (4).
2. The positive and negative electrode same-side battery cover plate assembly according to claim 1, wherein: the insulating frame (3) is further included, the insulating frame (3) comprises a ring frame (31) and a partition plate (32), wherein,
the ring frame (31) is arranged on one side of the cover plate body (1), and the ring frame (31) is of a circular ring structure;
the baffle (32) is arranged in the ring frame (31) to separate the middle space of the ring frame (31) to form two semicircular positioning holes (301), and the two positioning holes (301) respectively accommodate one confluence disc (4).
3. The positive and negative electrode same-side battery cover plate assembly according to claim 2, wherein: the insulating frame (3) is an injection molding piece, and the insulating frame (3) and the confluence disc (4) are connected into a whole in an injection molding mode.
4. The positive and negative electrode same-side battery cover plate assembly according to claim 1, wherein: the insulating connecting piece of the aluminum block (2) and the cover plate body (1) is an insulating ring (6), the insulating ring (6) comprises a first part (61), a second part (62) and a third part (63), wherein,
the first part (61) is attached to one end face of the cover plate body (1) and the aluminum block (2) in the same direction;
the second part (62) is attached to the end surfaces of the cover plate body (1) and the aluminum block (2) far away from the first part (61);
the third part (63) is in an annular structure, is arranged between the cover plate body (1) and the aluminum block (2), and the third part (63) is connected with the first part (61) and the second part (62).
5. The positive and negative electrode same-side battery cover plate assembly according to claim 4, wherein: the third portion (63) has a cross-shaped longitudinal section.
6. The positive and negative electrode same-side battery cover plate assembly according to claim 4, wherein: the insulating ring (6) is an injection molding piece, and the insulating ring (6), the cover plate body (1) and the aluminum block (2) are connected into a whole in an injection molding mode.
7. The positive and negative electrode same-side battery cover plate assembly according to claim 4, wherein: limiting grooves (00) are formed in two end faces of the cover plate body (1), and the first portion (61) and the second portion (62) are respectively attached to one of the limiting grooves (00).
8. The positive and negative electrode same-side battery cover plate assembly according to claim 4, wherein: the first part (61) and the second part (62) are of annular plate-shaped structures, and the diameters of the first part (61) and the second part (62) are larger than the diameter of the third part (63).
9. The positive and negative electrode same-side battery cover plate assembly according to claim 8, wherein: the inner diameter of the second part (62) is larger than that of the first part (61), the first part (61) is positioned between the cover plate body (1) and the confluence disc (4), and the inner diameters of the first part (61) and the third part (63) are the same.
10. A cylindrical battery characterized in that: a positive and negative electrode same-side battery cover plate assembly comprising any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320291021.8U CN219959202U (en) | 2023-02-23 | 2023-02-23 | Positive and negative electrode same side battery cover plate assembly and cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320291021.8U CN219959202U (en) | 2023-02-23 | 2023-02-23 | Positive and negative electrode same side battery cover plate assembly and cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219959202U true CN219959202U (en) | 2023-11-03 |
Family
ID=88539636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320291021.8U Active CN219959202U (en) | 2023-02-23 | 2023-02-23 | Positive and negative electrode same side battery cover plate assembly and cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219959202U (en) |
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2023
- 2023-02-23 CN CN202320291021.8U patent/CN219959202U/en active Active
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